Gas-heater.



No. 815,099. PATENTE'D MAR. 13, 1906;

L. P. KNODERER.

GAS HEATER.

APPLIOATION FILED AUG-28. 1905.

73 J Y xwwm K Z5. I 5 9 /5- x Hr e l//- WITNESSES: I 7 z ILLVENKL;

. ATTORNEYS LEVI F. KNODEBER. or ooLUMBUs, OHIO.

7 mE TER.

No. 815,099, Specification of Letters Pa en Patented March 13, 1906.

' Application filed Aligust28,1905. SerialNo.276,007.

To all whom it may concern:

Be it known that I, LEVI F. KNODERER, a

I Citizen of the UnitedStates, residing at C- lumbus, in the county of Franklin and. State of Ohio, have invented certain new and useful Improvements in Gas-Heaters, of which the following is a specification. My invention relates tonew and useful improvements in gas-heaters. 1

The object of the invention is to provide a gas-heater comprising a drum provided with a central hot-air chamber having inclined inlet-tubes extending through the drum and an outer shell or casing providing a cold-air-inlet space about the drum acting to collect the cold or fresh air anddirect the same to the tubes.

It is further the object to combine with this drum a gas-burner-having its flame im-' inging directly against the bottom of the liot-air chamber andv to .provide retarding and radiating parts whereby the roducts of combustion are fully deprived 0 their heat and the heated air delivered toafloor-register or the like.

Finally, the object of the invention is to provide a device of the character described that will be strong, durable, efiicient, and simple and inexpensive to manufacture.

With the above and other objects in view the invention consists of the novel details of construction and operation, a preferable embodiment of which is describedin the specification and illustrated in the accompanying drawings, wherein Figure 1 is a vertical sectional view of the heater, "the register, and register-box, a portion of the central hot-air chamber and the register-box being shown in elevation, Fig. 2 is a horizontal cross-sectional viewtaken on the line a: :20 of Fig; 1. r

In the drawin s the numeral 1- designates, the casing or shrfil of the drum,'which is cylindrical in form and provided with a closed bottom 2 and conical top 3. Within the casing of the drum a cylindrical hot-air chamber 4 is arranged centrally and provided with a closed bottom 5, which terminates aslight distance above the bottom 2 of the casing l. The hot-air chamber 4 is extended through and above the top 3 of the drum-casing and terminates in an upwardly-flaring registerbox 6, which is adapted to receive an ordinary floor-register 7. The register is adaptedto be supported in the upper surface of' the floor in the usual manner and the other parts floor. Y

A plurality of short inclined tubes Sextend between the drum-casing 1 and the hotair chamber'4. These tubesare arranged in 1 staggered relation and are adapted to convey the fresh air from the outsidewof the drum across the annular'space provided between the casing and the hot-air chamber and deliver the'air into the hot-air chamber, from which it will rise into the register-box and be distributed tothe register. Inthe bottom 2 of the drum I arrange a suitable gas-burner 9, which projects into the drum some distance and terminates in close proximity to the bottom 5 of the hot-airchamber. A pipe 10 is connected to the burner to supply gas thereto in the usual'manner. duced by, the burner will impinge on the bottom 5 of the hot-air chamber, and the products of. combustion generated pass up and The flame pro?- of the heater suitably supported beneath the l around the sides of the chamber. and also about the inclined tubes 8, thus heating the same,

so that the air in passingv through the tubes and up the hot-air chamber will be thoroughly heated without coming in contact with the products of combustionor the fumes. Between the hot-air chamber and the drumcasing 1 I provide at the upper and lower portions of the space thus formed circular baflieplates 11, each of which is rovided with a plurality of openings 12, T ese plates serve to retard the passage of the products of combustion and divide the interior of the drum into chambers through which the products are caused to pass before escaping, thus being fully deprived of their heat. Near the upper end of the drum an. outletipe 13 is provided, so that the waste fumes may be carried off.

I have found that the best results are had by providing an outer shell or jacket 14, having a conical top 15, and placing the same over the drum, so that the top rests on the top 3 thereof.

pro ucts and The shell or jacket is some what larger than the drum, so as to provide an annular space therebetween up whlchthe cold or fresh'air passes. This shell or jacket serves to collect the fresh air and direct the same to the inclined tubes 8, so that a constant circulation is kept up and the air passing through the heater prevented from becoming foul or unhealthy.- It willbe apparent that the heated air passing out of the heater IIQ 7 will to some extent create a suction or vacuum'which will draw in the fresh air, thus tubes extending from the casing to the chamber, a shell surrounding the casing closed at its upper end and providing a space between itself and the casing, a gas-burner arranged in the lower portion of the casing directly beneath the hot-air chamber, and means for conducting the products of combustion from the casing.

2. In a gas-heater, the combination with a floor-register, of a hot-air chamber, a rad iating box carried. by the chamber having communication with the register, a casing closed at its top and bottom surrounding the hot-air chamber so as to provide a space therebetween, inclined inlet-tubes extending between the hot-air chamber and the casing across the space therebetween, a shell larger than the casing surrounding the same and having an open lower end and a closed top, a gasburner arranged in the casing beneath the hot air chamber, retarding means arranged in the space between the hot-airchamber and the casing, and means for conducting the products of combustion from the casing.

In testimony whereof I afiix my signature in presence of two witnesses.

LEVI F. KNODERER.

WVitnesses:

A. L. PHELPS, M. B. SonLEY. 

